Statistical analyses of exceptional events: the Italian experience
Keywords
Statistical learning
Code:
6/2008
Title:
Statistical analyses of exceptional events: the Italian experience
Date:
Tuesday 26th February 2008
Author(s):
Fumagalli, E.; Lo Schiavo, L.; Paganoni, A. M.; Secchi, P.
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Abstract:
In the analysis of reliability performance of distribution utilities
as well as in continuity of supply regulation, criteria are needed
for separating normal operation data from exceptional events. In recent
years a number of statistical methodologies has been proposed for
this purpose. We present here the new methodology that was adopted
by the Italian regulatory authority at the beginning of 2008. The
decision is supported by a statistical analysis of the number of faults
on the MV and on the LV networks, for each 6-hour time interval in
a three year time span, for different provinces and distribution companies.
The new methodology is employed in the reward and penalty mechanisms
that regulate the SAIDI, SAIFI and MAIFI indicators and, with some
original provisions, also in the Guaranteed Standard on maximum restoration
times.
This report, or a modified version of it, has been also submitted to, or published on
IEEE Transactions on Power Delivery, Vol. 24, No 3, 1319-1327 (2009)
IEEE Transactions on Power Delivery, Vol. 24, No 3, 1319-1327 (2009)